GSD-2023-34243

Vulnerability from gsd - Updated: 2023-12-13 01:20
Details
TGstation is a toolset to manage production BYOND servers. In affected versions if a Windows user was registered in tgstation-server (TGS), an attacker could discover their username by brute-forcing the login endpoint with an invalid password. When a valid Windows logon was found, a distinct response would be generated. This issue has been addressed in version 5.12.5. Users are advised to upgrade. Users unable to upgrade may be mitigated by rate-limiting API calls with software that sits in front of TGS in the HTTP pipeline such as fail2ban.
Aliases
Aliases
CVE-2023-34243
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{
  "GSD": {
    "alias": "CVE-2023-34243",
    "id": "GSD-2023-34243"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-34243"
      ],
      "details": "TGstation is a toolset to manage production BYOND servers. In affected versions if a Windows user was registered in tgstation-server (TGS), an attacker could discover their username by brute-forcing the login endpoint with an invalid password. When a valid Windows logon was found, a distinct response would be generated. This issue has been addressed in version 5.12.5. Users are advised to upgrade. Users unable to upgrade may be mitigated by rate-limiting API calls with software that sits in front of TGS in the HTTP pipeline such as fail2ban.",
      "id": "GSD-2023-34243",
      "modified": "2023-12-13T01:20:30.938012Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2023-34243",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "tgstation-server",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 4.0.0, \u003c 5.12.5"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "tgstation"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "TGstation is a toolset to manage production BYOND servers. In affected versions if a Windows user was registered in tgstation-server (TGS), an attacker could discover their username by brute-forcing the login endpoint with an invalid password. When a valid Windows logon was found, a distinct response would be generated. This issue has been addressed in version 5.12.5. Users are advised to upgrade. Users unable to upgrade may be mitigated by rate-limiting API calls with software that sits in front of TGS in the HTTP pipeline such as fail2ban."
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-200",
                "lang": "eng",
                "value": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/tgstation/tgstation-server/security/advisories/GHSA-w3jx-4x93-76ph",
            "refsource": "MISC",
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          }
        ]
      },
      "source": {
        "advisory": "GHSA-w3jx-4x93-76ph",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "[4.0.0.0,5.12.5)",
          "affected_versions": "All versions starting from 4.0.0.0 before 5.12.5",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-307",
            "CWE-937"
          ],
          "date": "2023-06-15",
          "description": "TGstation is a toolset to manage production BYOND servers. In affected versions if a Windows user was registered in tgstation-server (TGS), an attacker could discover their username by brute-forcing the login endpoint with an invalid password. When a valid Windows logon was found, a distinct response would be generated. This issue has been addressed in version 5.12.5. Users are advised to upgrade. Users unable to upgrade may be mitigated by rate-limiting API calls with software that sits in front of TGS in the HTTP pipeline such as fail2ban.",
          "fixed_versions": [
            "5.12.5"
          ],
          "identifier": "CVE-2023-34243",
          "identifiers": [
            "CVE-2023-34243",
            "GHSA-w3jx-4x93-76ph"
          ],
          "not_impacted": "All versions before 4.0.0.0, all versions starting from 5.12.5",
          "package_slug": "nuget/TGServiceInterface",
          "pubdate": "2023-06-08",
          "solution": "Upgrade to version 5.12.5 or above.",
          "title": "Improper Restriction of Excessive Authentication Attempts",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2023-34243",
            "https://github.com/tgstation/tgstation-server/pull/1526",
            "https://github.com/tgstation/tgstation-server/security/advisories/GHSA-w3jx-4x93-76ph"
          ],
          "uuid": "198a0c75-c405-4354-9bf9-165918a2fe3d"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
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              {
                "cpe23Uri": "cpe:2.3:a:tgstation13:tgstation-server:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "5.12.5",
                "versionStartIncluding": "4.0.0.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
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          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2023-34243"
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        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "TGstation is a toolset to manage production BYOND servers. In affected versions if a Windows user was registered in tgstation-server (TGS), an attacker could discover their username by brute-forcing the login endpoint with an invalid password. When a valid Windows logon was found, a distinct response would be generated. This issue has been addressed in version 5.12.5. Users are advised to upgrade. Users unable to upgrade may be mitigated by rate-limiting API calls with software that sits in front of TGS in the HTTP pipeline such as fail2ban."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-307"
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/tgstation/tgstation-server/pull/1526",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Patch"
              ],
              "url": "https://github.com/tgstation/tgstation-server/pull/1526"
            },
            {
              "name": "https://github.com/tgstation/tgstation-server/security/advisories/GHSA-w3jx-4x93-76ph",
              "refsource": "MISC",
              "tags": [
                "Mitigation",
                "Vendor Advisory"
              ],
              "url": "https://github.com/tgstation/tgstation-server/security/advisories/GHSA-w3jx-4x93-76ph"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2023-06-15T19:20Z",
      "publishedDate": "2023-06-08T22:15Z"
    }
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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